Home / 292,228.20-438,515.10-213,143.40

Finding the Fourth Proportional to 292,228.20, 438,515.10 and 213,143.40

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Solution

The fourth proportional to 292,228.20, 438,515.10 and 213,143.40 is: 319,841.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,228.20 : 438,515.10 = 213,143.40 : x
  2. Step 2: Convert to fraction form
    292,228.20/438,515.10 = 213,143.40/x
  3. Step 3: Cross multiply
    292,228.20x = 438,515.10 × 213,143.40
  4. Step 4: Simplify right side
    292,228.20x = 93,466,599,365.34
  5. Step 5: Solve for x
    x = 93,466,599,365.34/292,228.20
  6. Step 6: Final answer
    x = 319,841.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.